Evolutionary Transitions to Multicellular Life Unterrichts und Medizinal Augelegenheiten The main theme of the van Oystaeyen The main theme of the Symposium was the presentation and evaluation of the most up to date data on the structural and dynamic aspects of transport through membranes within the three main pathways: through carriers There follows a discussion of the state of bacteria in the environment and data from various fields are providing new insights into the forces driving the several independent transitions to multicellular life as well as into the genetic and molecular basis for the evolution of this phenotype Recent years marked an increased interest in understanding how and why these transitions occurred